I guess by "road systems will eventually co-evolve with automated driving" I would also include relatively minor interventions like increasing the proportion of controlled intersections, which are much easier for autonomous systems to deal with.

I have spent a lot of time in parts of Asia where massive evolution of transportation infrastructure has happened on a scale of a few decades (or less), so it seems less crazy to me that large-scale road evolution could happen along with autonomous vehicle development than it might seem to someone working in the West.